The invention belongs to the field of tissue engineering materials, and particularly relates to a composite stent material and preparation thereof. According to the mutual reaction and compounding of positive and negative charges of carboxymethyl chitosan, hyaluronic acid, silk fibroin and carbon nanotube solution, the prepared composite stent material can combine the advantages of raw materials. The composite stent material has the advantages that the low antigenicity, low irritation and low cell toxicity are excellent; the cell growth and mechanical property are promoted; the freeze-drying product is of a three-dimensional porous structure, multiple pores are formed, and the specific surface area is large; a drug or cell growth factor can be further loaded, and the slow-release effect is realized.